2. C. Reverchoni Gray. Hirsutulous below, glabrous above: stem slender, erect, 
cymosely and effusely much-branched: leaves sparingly dentate, 12 mm. long; radi- 
cal spatulate, lower cauline spatulate, those of upper branches almost filiform and 
entire: flower and fruit ereet on almost capillary peduncles: pod ovate, crowned 
with the somewhat shorter narrowly linear-lanceolate erect calyx-lobes, opening 
towards the summit.—On rocks, central and western Texas. 
ERICACEH. (HEATH FAMILY.) 
Trees, shrubs, or herbs, with flowers regular or nearly so, stamens as 
many or twice as many as the 4 or 5-lobed or 4 or 5-petaled corolla and 
free from but inserted with it, 2-celled anthers commonly append- 
aged or opening by terminal chinks or pores, single style, and 3 to 
10-celled ovary. 
* Shrubs or small trees, 
1. Arbutus. Flowers small, in a terminal cluster of racemes or panicles: corolla 
from globular to ovate, 5-toothed: stamens twice as many as corolla-lobes, included: 
anthers with a pair of reflexed awns on back, each cell opening at apex anteriorly by 
a terminal pore: leaves evergreen and coriaceous. 
2 Rhododendron. Flowers large and showy, in umbellate clusters: corolla 
bell-shaped or funnel-formed, 5-lobed or parted: stamens mostly 5, more or less ex- 
serted and declined (as also the style): anthers destitute of awns or appendages, each 
cell opening by a terminal pore: leaves (in ours) deciduous. 
* * Herbaceous scaly root-parasites, destitute of all green foliage. 
3, Monotropa. Corolla of 4 or 5separate narrow petals: calyx imperfect or bract- 
like: anthers kidney-shaped, opening across the top. 
1. ARBUTUS Tourn. 
Trees or shrubs, with evergreen and coriaceous alternate petiolate 
leaves, white or flesh-colored small flowers in a terminal cluster of 
racemes or panicles, scaly bracts and bractlets, small 5-parted calyx, 
globular to ovate 5-toothed corolla, included stamens twice as many as 
the corolla-lobes, compressed anthers bearing a pair of reflexed awns 
on back and each cell opening by a terminal pore, and a 5-celled ovary 
ripening into a granular-coated many-seeded berry. 
1. A. Xalapensis HBK., var. Texana Gray. A shrub or small tree, with older 
bark mostly deciduous: leaves from lanceolate-oblong to oval or ovate, 5 to 7.5 em. 
long: ovary pubescent: berries yellowish-red. (4. Terana Buckley)—-Foothills of 
the mountains west of the Pecos, and known as ‘ madrona.” Yellowish-red berries, 
the size of currants, rather pleasant-tasted (Havard). 
2. RHODODENDRON L. (Rose BAY, AZALEA, etc.) 
Shrubs or small trees, with chiefly alternate entire leaves (deciduous 
and glandular-mucronate in ours), large and showy 5-merous flowers 
in wmbelled clusters from large scaly-bracted terminal buds, mostly 
small or minute calyx, bell-shaped or funnel-form lobed or cleft corolla, 
stamens as few as the corolla-lobes or twice as many (along with the 
style more or less exserted and declined in ours), anther-cells opening by 
a round terminal pore, and a 5-celled 5-valved many-seeded pod. 
1. R. nudiflorum Torr. A shrub 9 to 30 dm. high: leaves obovate to oblong-ob- 
lanceolate, downy underneath: flowers showy, flesh-color to pink and purple, appear- 
ing before or with the leaves: corolla with conspicuous funnel-form tube scarcely 
